People who replaced just 30 minutes of sitting per day with low-intensity physical activity lowered their risk of an early death by 17 percent, according to the study published online Jan. 14 in the American Journal of Epidemiology.

People who replaced just 30 minutes of sitting per day with low-intensity physical activity lowered their risk of an early death by 17 percent, according to the study published online Jan. 14 in the American Journal of Epidemiology.